A handy script to open the xcode workspace/project file easily.

xcopen.sh

#!/usr/bin/env bash
# set -x
#
# Source: https://gist.github.com/xingheng/f7bc8d7d89a68a8f6ae42851b5aa0d0e
# Author: Will Han
#

target_dir=${1:-$(pwd)}
test ! -d ${target_dir} && { echo "Invalid target directory for searching!"; exit 1; }

readonly skip_signal=1
readonly fail_signal=2

function open_xcode_project() {
    local ret=0
    local type_name=$1
    shift
    local target_files=("$@")

    local target_file_count=${#target_files[@]}
    # echo "$type_name files = "$target_files, $target_file_count

    if [[ $target_file_count = 1 ]]; then
        echo "Opening xcode $type_name file: "$target_files
        exit $(open "${target_files[0]}")
    elif [[ $target_file_count > 1 ]]; then
        echo "Found "$target_file_count" xcode $type_name files, which one will you open?"

        for (( i=0; i<$target_file_count; i++ ))
        do
            echo "$[i+1]: ${target_files[$i]}"
        done

        while IFS= read -r input
        do
            local num_reg="^[0-9]+$"
            local quit_reg="q|Q"

            if [[ $input =~ $num_reg ]]; then
                if [[ $input -eq 0 ]]; then
                    echo "Skiping all the $type_name files"
                    ret=$skip_signal
                    break
                elif [[ $input -le $target_file_count ]]; then
                    echo "Opening xcode $type_name file: "${target_files[$input-1]}
                    exit $(open "${target_files[$input-1]}")
                else
                    echo "Invalid sequence number! Use [1..$target_file_count] instead."
                fi
            elif [[ $input =~ $quit_reg ]]; then
                exit 0
            else
                echo "Invalid input, please use the corresponding file number before the colon to choose it or use 0 to skip all of them."
            fi
        done
    else
        ret=$skip_signal
    fi

    return $ret
}


function main() {
    # Refer to https://stackoverflow.com/a/23357277/1677041

    workspace_files=()
    while IFS=  read -r -d $'\0'; do
        workspace_files+=("$REPLY")
    done < <(find $target_dir -maxdepth 1 -type d -name "*.xcworkspace" -print0)

    open_xcode_project "workspace" "${workspace_files[@]}"

    if [[ $? -ne $skip_signal ]]; then
        return $fail_signal
    fi

    project_files=()
    while IFS=  read -r -d $'\0'; do
        project_files+=("$REPLY")
    done < <(find $target_dir -maxdepth 1 -type d -name "*.xcodeproj" -print0)

    open_xcode_project "project" "${project_files[@]}"

    if [[ $? -ne $skip_signal ]]; then
        return $fail_signal
    fi

    echo "No xcode project entry found in ${target_dir}, searching in its sub-directories..."

    recursive_workspace_files=()
    while IFS=  read -r -d $'\0'; do
        recursive_workspace_files+=("$REPLY")
    done < <(find $target_dir -type d -name "*.xcworkspace" -print0)

    open_xcode_project "workspace" "${recursive_workspace_files[@]}"

    if [[ $? -ne $skip_signal ]]; then
        return $fail_signal
    fi

    recursive_project_files=()
    while IFS=  read -r -d $'\0'; do
        recursive_project_files+=("$REPLY")
    done < <(find $target_dir -type d -name "*.xcodeproj" -print0)

    open_xcode_project "project" "${recursive_project_files[@]}"

    local ret=$?

    if [[ $ret -ne 0 ]]; then
        echo "Nothing found."
    fi

    return $ret
}


main

Just download (and rename) it to your local environment paths and make it executable.

curl -sLo- https://gist.githubusercontent.com/xingheng/f7bc8d7d89a68a8f6ae42851b5aa0d0e/raw/1d9ffb000eb0681788d696f78a592dfb89419edd/xcopen.sh > /usr/local/bin/xcopen
chmod +x /usr/local/bin/xcopen